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41. 发明专利

PL2311032T3 Koder i dekoder audio do kodowania i dekodowania próbek audio 未知
公开(公告)号：PL2311032T3
公开(公告)日：2016-06-30
申请号：PL09776858
申请日：2009-06-26
申请人： FRAUNHOFER GES FORSCHUNG
发明人： LECOMTE JÉRÉMIE , GOURNAY PHILIPPE , BAYER STEFAN , MULTRUS MARKUS , BESSETTE BRUNO , GRILL BERNHARD
IPC分类号： G10L19/022 , G10L19/20

42. 发明专利

AU2014295302B2 Apparatus and method for encoding and decoding an encoded audio signal using temporal noise/patch shaping 未知
公开(公告)号：AU2014295302B2
公开(公告)日：2016-06-30
申请号：AU2014295302
申请日：2014-07-15
申请人： FRAUNHOFER GES FORSCHUNG
发明人： DISCH SASCHA , NAGEL FREDERIK , GEIGER RALF , THOSHKAHNA BALAJI NAGENDRAN , SCHMIDT KONSTANTIN , BAYER STEFAN , NEUKAM CHRISTIAN , EDLER BERND , HELMRICH CHRISTIAN
IPC分类号： G10L19/03 , G10L19/02 , G10L19/028 , G10L21/0388
摘要： An apparatus for decoding an encoded audio signal, comprises: a spectral domain audio decoder (602) for generating a first decoded representation of a first set of first spectral portions being spectral prediction residual values; a frequency regenerator (604) for generating a reconstructed second spectral portion using a first spectral portion of the first set of first spectral portions, wherein the reconstructed second spectral portion additionally comprises spectral prediction residual values; and an inverse prediction filter (606) for performing an inverse prediction over frequency using the spectral residual values for the first set of first spectral portions and the reconstructed second spectral portion using prediction filter information (607) included in the encoded audio signal.

43. 发明专利

HK1211378A1 APPARATUS AND METHOD FOR ENCODING AND DECODING AN ENCODED AUDIO SIGNAL USING TEMPORAL NOISE PATCH SHAPING 未知
公开(公告)号：HK1211378A1
公开(公告)日：2016-05-20
申请号：HK15112062
申请日：2015-12-08
申请人： FRAUNHOFER GES FORSCHUNG
发明人： DISCH SASCHA , NAGEL FREDERIK , GEIGER RALF , THOSHKAHNA BALAJI NAGENDRAN , SCHMIDT KONSTANTIN , BAYER STEFAN , NEUKAM CHRISTIAN , EDLER BERND , HELMRICH CHRISTIAN
IPC分类号： G10L20060101
摘要： An apparatus for decoding an encoded audio signal, comprises a spectral domain audio decoder (112) for generating a first decoded representation of a first set of first spectral portions, the decoded representation having a first spectral resolution; a parametric decoder (114) for generating a second decoded representation of a second set of second spectral portions having a second spectral resolution being lower than the first spectral resolution; a frequency regenerator (116) for regenerating every constructed second spectral portion having the first spectral resolution using a first spectral portion and spectral envelope information for the second spectral portion; and a spectrum time converter (118) for converting the first decoded representation and the reconstructed second spectral portion into a time representation.

44. 发明专利

PL2311034T3 Koder i dekoder audio do kodowania ramek próbkowanego sygnału audio 未知
公开(公告)号：PL2311034T3
公开(公告)日：2016-04-29
申请号：PL09777044
申请日：2009-07-08
申请人： FRAUNHOFER GES FORSCHUNG
发明人： LECOMTE JÉRÉMIE , GOURNAY PHILIPPE , BAYER STEFAN , MULTRUS MARKUS , RETTELBACH NIKOLAUS
IPC分类号： G10L19/20

45. 发明专利

CA2730204C AUDIO ENCODER AND DECODER FOR ENCODING AND DECODING AUDIO SAMPLES 未知
公开(公告)号：CA2730204C
公开(公告)日：2016-02-16
申请号：CA2730204
申请日：2009-06-26
申请人： FRAUNHOFER GES FORSCHUNG , VOICEAGE CORP
发明人： LECOMTE JEREMIE , BAYER STEFAN , MULTRUS MARKUS , GRILL BERNHARD , GOURNAY PHILIPPE , BESSETTE BRUNO
IPC分类号： G10L19/00
摘要： An audio encoder (100) for encoding audio samples, comprising a first time domain aliasing introducing encoder (110) for encoding audio samples in a first encoding domain, the first time domain aliasing introducing encoder (110) having a first framing rule, a start window and a stop window. The audio encoder (100) further comprises a second encoder (120) for encoding samples in a second encoding domain, the second encoder (120) having a different second framing rule. The audio encoder (100) further comprises a controller (130) switching from the first encoder (110) to the second encoder (120) in response to characteristic of the audio samples, and for modifying the second framing rule in response to switching from the first encoder (110) to the second encoder (120) or for modifying the start window or the stop window of the first encoder (110), wherein the second framing rule remains unmodified.

46. 发明专利

AU2013200679B2 Audio encoder and decoder for encoding and decoding audio samples 未知
公开(公告)号：AU2013200679B2
公开(公告)日：2015-03-05
申请号：AU2013200679
申请日：2013-02-08
申请人： FRAUNHOFER GES FORSCHUNG
发明人： LECOMTE JEREMIE , GOURNAY PHILIPPE , BAYER STEFAN , MULTRUS MARKUS , BESSETTE BRUNO , GRILL BERNHARD
IPC分类号： G10L19/02
摘要： An audio encoder for encoding audio samples, comprising a 5 first time domain aliasing introducing encoder for encoding audio samples in a first encoding domain, the first time domain aliasing introducing encoder having a first framing rule, a start window and a stop window, a second encoder for encoding samples in a second encoding 10 domain, the second encoder having a different second framing rule and comprising an AMR or AMR-WB+ encoder with the second framing rule being an AMR framing rule according to which a superframe comprises four AMR frames, the second encoder having a predetermined frame size 15 number of audio samples for the superframe, and a coding warm-up period number of audio samples, a superframe of the second encoder being an encoded representation of a number of timely subsequent audio samples, the number being equal to the predetermined frame size number of 20 audio samples and a controller for switching from the first encoder to the second encoder or vice versa in response to a characteristic of the audio samples, and for modifying the second framing rule in response to switching from the first encoder to the second encoder or from the 25 second encoder to the first encoder to the extent that a first superframe at the switching has an increased frame size number of audio samples with comprising a fifth AMR frame in addition to the four AMR frames, with the fifth AMR frame respectively overlapping a fading part of a 30 start window or a stop window of the first time domain aliasing introducing encoder. 4057756_1 (GHMaters) P86102.AU.1

47. 发明专利

CA2918701A1 AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS USING TWO-CHANNEL PROCESSING WITHIN AN INTELLIGENT GAP FILLING FRAMEWORK 未知
公开(公告)号：CA2918701A1
公开(公告)日：2015-01-29
申请号：CA2918701
申请日：2014-07-15
申请人： FRAUNHOFER GES FORSCHUNG
发明人： DISCH SASCHA , NAGEL FREDERIK , GEIGER RALF , THOSHKAHNA BALAJI NAGENDRAN , SCHMIDT KONSTANTIN , BAYER STEFAN , NEUKAM CHRISTIAN , EDLER BERND , HELMRICH CHRISTIAN
IPC分类号： G10L19/008 , G10L19/02 , G10L19/18 , G10L21/038
摘要： An apparatus for generating a decoded two-channel signal, comprises: an audio processor (802) for decoding an encoded two-channel signal to obtain a first set of first spectral portions; a parametric decoder (804) for providing parametric data for a second set of second spectral portions and a two-channel identification identifying either a first or a second different two-channel representation for the second spectral portions; and a frequency regenerator (806) for regenerating a second spectral portion depending on a first spectral portion of the first set of first spectral portions, the parametric data for the second portion and the two-channel identification for the second portion.

48. 发明专利

AU2011226143B2 Audio signal decoder, audio signal encoder, method for decoding an audio signal, method for encoding an audio signal and computer program using a pitch-dependent adaptation of a coding context 未知
公开(公告)号：AU2011226143B2
公开(公告)日：2014-08-28
申请号：AU2011226143
申请日：2011-03-09
申请人： FRAUNHOFER GES FORSCHUNG , DOLBY INT AB
发明人： BAYER STEFAN , BACKSTROM TOM , GEIGER RALF , EDLER BERND , DISCH SASCHA , VILLEMOES LARS
IPC分类号： G10L21/04 , G10L19/02 , G10L19/022 , G10L25/90
摘要： An audio signal decoder (150 for providing a decoded audio signal representation (154) on the basis of an encoded audio signal representation (152) comprising an encoded spectrum representation (ac_spectral_data[]) and an encoded time warp information (tw_data[]) comprises a context-based spectral value decoder (160) configured to decode a codeword (acod_m) describing one or more spectral values or at least a portion (m) of a number representation of one or more spectral values in dependence on a context state, to obtain decoded spectral values (162, 297, x_ac_dec[]). The audio signal decoder also comprises a context state determinator (170) configured to determine a current context state (164, c) in dependence on one or more previously decoded spectral values (162, 297). The audio signal decoder also comprises a time warping frequency-domain-to-time-domain converter (180) configured to provide a time-warped time-domain representation (182) of a given audio frame on the basis of a set of decoded spectral values (162) associated with the given audio frame and provided by the context-based spectral value decoder and in dependence on the time warp information. The context-state determinator (170) is configured to adapt the determination of the context state to a change of a fundamental frequency between subsequent audio frames. An audio signal encoder applies a comparable concept.

49. 发明专利

AU2011226140B2 Audio signal decoder, audio signal encoder, methods and computer program using a sampling rate dependent time-warp contour encoding 未知
公开(公告)号：AU2011226140B2
公开(公告)日：2014-08-14
申请号：AU2011226140
申请日：2011-03-09
申请人： DOLBY INT AB , FRAUNHOFER GES FORSCHUNG
发明人： BAYER STEFAN , BAECKSTROEM TOM , GEIGER RALF , EDLER BERND , DISCH SASCHA , VILLEMOES LARS
IPC分类号： G10L19/02 , G10L19/022 , G10L25/90
摘要： An audio signal decoder configured to provide a decoded audio signal representation on the basis of an encoded audio signal representation comprising a sampling frequency information, an encoded time warp information and an encoded spectrum representation comprises a time warp calculator and a warp decoder. The time warp calculator is configured to adapt a mapping rule for mapping codewords of the encoded time warp information onto decoded time warp values describing the decoded time warp information in dependence on the sampling frequency information. The warp decoder is configured to provide the decoded audio signal representation on the basis of the encoded spectrum representation and in dependence on the decoded time warp information.

50. 发明专利

CA2707368C AUDIO TRANSFORM CODING USING PITCH CORRECTION 未知
公开(公告)号：CA2707368C
公开(公告)日：2014-04-15
申请号：CA2707368
申请日：2009-03-23
申请人： FRAUNHOFER GES FORSCHUNG
发明人： EDLER BERND , DISCH SASCHA , GEIGER RALF , BAYER STEFAN , KRAEMER ULRICH , FUCHS GUILLAUME , NEUENDORF MAX , MULTRUS MARKUS , SCHULLER GERALD , POPP HARALD
IPC分类号： G10L19/022
摘要： A processed representation of an audio signal having a sequence of frames is generated by sampling the audio signal within a first and a second frame of the sequence of frames, the second frame following the first frame, the sampling using information on a pitch contour of the first and the second frame to derive a first sampled representation. The audio signal is sampled within the second and the third frame, the third frame following the second frame in the sequence of frames. The sampling uses the information on the pitch contour of the second frame and information on a pitch contour of the third frame to derive a second sampled representation. A first scaling window is derived for the first sampled representation and a second scaling window is derived for the second sampled representation, the scaling windows depending on the samplings applied to derive the first sampled representations or the second sampled representation.

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